trig. unit circle? HElp???

Question

Find the radian measure of the central angle of a circle of radius 96 km that intercepts an arc of length 294 km. Answer in units of rad

Answer 1

A circle with a radius fo 96 has a circumference of 2π(96) = 192π

or an arc of 2π radians

arc length of 294 is about half a circle or more precisely

294/192π*2π = 3.06 radians